HAIL.SO / DISPATCH · 2026-07-25 · COMPARE
FILE: COMPARE · 6 of 6 slots

side by side.

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02

Speech to text

4 models
Speechmatics
Speechmatics Enhanced
×
Rev.ai
Rev.ai Reverb
×
AssemblyAI
Universal-2
×
Rev.ai
Rev.ai Whisper Fusion
×
$/min$0.002150$0.003300$0.002500$0.005000
$/min batch
Streaming
Realtime
Languages56+en99+en
Diarizationincludedincludedextra-costincluded
TTFW
Verified2026-07-192026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗provider page ↗
03

Text to speech

2 models
Deepgram
Deepgram Aura 2
×
Smallest.ai
Lightning v3.1 Pro
×
$/1M chars$30.00$19.50
Voice qualityneuralneural
Voice cloning
Voice count
Languagesen, es, de, fr, nl, it, jaen, hi, mr, ta, ml, te, kn, pa, bn, or, gu, ar, zh, id, ja, ko, ms, tr, vi, de, es, fr, it, pt, ru, el, fi, no, pl
SSML support
TTFB200ms
Output formatswav, mp3, linear16, mulaw, alaw, opuspcm, mp3, wav, ulaw, alaw
Verified2026-07-192026-07-19
Sourceprovider page ↗provider page ↗